Centralized Dashboard for AJO in multiple sandboxes

Description -

We have several dashboards. We want to see aggregated report of campaign, journeys and failed jobs for all sandboxes in one page. 

Why is this feature important to you -

For efficiency

How would you like the feature to work -

One dashboard what will show following information:
1. Number of journeys per dashboards with name
Last execution of the Journey with number of persons selected
2. Number of campaigns per dashboards with name
Last execution of the campaigns with number of persons selected
All failed jobs

Current Behavior: 

Only overview page of journey with limited option. It does not even option of selecting time. Furthermore, it is just per sandbox.